Added an test for the WordPress config provider.
Fixing issue on PHP 5.2.

Parse error: syntax error, unexpected T_PAAMAYIM_NEKUDOTAYIM in /home/travis/build/pronamic/wp-pronamic-ideal/classes/Pronamic/WP/Pay/Gateways/ConfigProvider.php on line 17
Another try to fix PHP 5.2 support.
Updated to 2.0.2.
Updated POT file.
Merge branch 'release/2.0.2'